CVE-2023-0296

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2023-01-17. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

A fix is available — apply it.

The Birthday attack against 64-bit block ciphers flaw (CVE-2016-2183) was reported for the health checks port (9979) on etcd grpc-proxy component. Even though the CVE-2016-2183 has been fixed in the etcd components, to enable periodic health checks from kubelet, it was necessary to open up a new port (9979) on etcd grpc-proxy, hence this port might be considered as still vulnerable to the same type of vulnerability. The health checks on etcd grpc-proxy do not contain sensitive data (only metrics data), therefore the potential impact related to this vulnerability is minimal. The CVE-2023-0296 has been assigned to this issue to track the permanent fix in the etcd component.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
—
EPSS
24.4%
KEV
Not listed

Published

January 17, 2023

Last Modified

April 4, 2025

References (2)

Vendor Advisories for CVE-2023-0296(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatopenshift4/ose-etcd:v4.9.0-202301301454.p0.g9aaa8c6.assembly.stream2023-02-13redhat
redhatopenshift4/ose-etcd:v4.10.0-202301062005.p0.g2a91bf0.assembly.stream2023-01-24redhat
redhatopenshift4/ose-etcd:v4.11.0-202301041324.p0.gc50e9aa.assembly.stream2023-01-19redhat
redhatopenshift4/ose-etcd:v4.12.0-202212121125.p0.g89a451c.assembly.stream2023-01-17redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 11× in last 7d / 44× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-22 23:04 UTCEG score recompute
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  73. 2026-05-25 08:29 UTCVendor advisory
  74. 2026-05-25 08:28 UTCGHSA enrichment
  75. 2026-05-24 11:21 UTCOSV refresh

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2023-0296?
CVE-2023-0296 is a medium vulnerability published on January 17, 2023. The Birthday attack against 64-bit block ciphers flaw (CVE-2016-2183) was reported for the health checks port (9979) on etcd grpc-proxy component. Even though the CVE-2016-2183 has been fixed in the etcd components, to enable periodic health checks from kubelet, it was necessary to open up a new…
When was CVE-2023-0296 disclosed?
CVE-2023-0296 was first published in the National Vulnerability Database on January 17, 2023, with the most recent update on April 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-0296 actively exploited?
CVE-2023-0296 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 24.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-0296?
CVE-2023-0296 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2023-0296?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-0296, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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